Wrench.



UNITED STATES PATENT ()FFICE.

WRENCH.

Specification of Letters Patent.

Patented Aug. '7, 1906.

Application filed September 19, 1905. Serial No. 279,175-

To aZZ whom it may concern:

Be it known that I, BENJAMIN F. ARBOUR, a citizen of the United Statesof America, residing at Allegheny, in the county of Allegheny and Stateof Pennsylvania, have invented certain new and useful Improvements inWrenches, of which the following is a specification, reference being hadtherein to the accompanying drawings.

This invention relates to certain new and useful improvements inwrenches.

The. primary object contemplated in my improved construction is theprovision ofa simple and inexpensive adjusting element, which shall becapable of setting the wrench with its jaws apart any desired distance,the degree of adjustment being very fine.

The detailed construction will appear in the course of the followingdescription, in which reference is had to the accompanying drawings,forming a part of this specification, like numerals designating likeparts throughout the several views, in which Figure 1 is a verticalcentral section, partly broken away, of my improved wrench. Fig. 2 is afront elevation of the wrench shown in Fig. 1. Figs. 3 and 4 are sideand front elevations, respectively, of the adjusting-lever employed inmy improved construction shown in Figs. 1 and 2; and Fig. 5 is a detailperspective view of a shoe with which the adjusting element shown inFigs. 3 and 4 coacts.

My improved wrench comprises a handle portion 1, which is formed with alongitudinally-disposed central opening 2 and with alongitudinally-disposed slot 3 in the front thereof. The handle portion1 is provided at its top with an integral jaw 4 and a jaw 5, carried bya movable shank 6, that sets in the opening 2 of the handle portion 1,coacts with the jaw 4 in gri ping an' object. Engagement'of the sha 1 6with the handle portion 1 is accomplished by means of engaging teeth 10,formed upon the inner surface of the handle adjacent said slot 2, whichengage corresponding teeth 11, formed upon the shank 6. These series ofteeth 10 and 11 are locked in their intermeshing position by providedwith an inclined outer face 17.

When the lever is in position shown in Fig.

2, the reduced portion 14 thereof will bear against the inclined face 17of the shoe 16 and will allow the teeth 10 and 11 to be out of mesh, sothat the shank 6 may be moved in either direction. When the jaws havebeen set and the locking engagement thereof is desired, the lever 12 ismoved to assume the dotted-line position in Fig. 2, at which time thecam-face 13 thereof will ride outwardly upon the inclined face 17 of theshoe 16 and draw therewith the shank 6 until the teeth 11, formedthereon, intermesh with teeth 10 upon the handle, thereby effecting alocking union between said shank and said handle.

Having fully described my invention, I 'claim I A wrench embodying ahandle provided with a longitudinal recess extending to one end thereof,and an intermediate longitudinal slot, an integral head formed upon saidhandle, a shank mounted in said handle, and adapted to have movement insaid recess, an integral head formed onsaid shank and confronting saidfirst-named head, said handle being formed adjacent said slot and Withinthe said recess with a vertical series of teeth, said shank being formedupon the side adj acent said slot with a series of teeth of equal pitchto said first-named teeth, a bolt carried by said shank and projectingthrough said slot a wedge-shaped block mounted on said bolt and a levermounted on said bolt outside of said wedge-shaped block for effecting anintermeshing locking engagement between said teeth formed upon saidhandle and shank, and for forming frictional locking engagement with theoutside surface of said handle.

In testimony whereof I affix my signature in the presence of twowitnesses.

BENJAMIN F. ARBOUR.

Witnesses:

H. O. EVERT, E. E. POTTER.

